Writing-table.



w. KUNEMANN.

WRITING TABLE. APPLICATION FILED SEPT. 23. 191 I.

COLUMBIA PLANOGRAPM 60., WASHINGTON, D. 1:.

Patented Sapt. 14:, 1915.

wILnELMKoNEMANN, or MINDEN, GERMANY.

WRITING-TABLE.

Application filed September 23, 1911.

To all whom it may concern Be it known that LWILHELM KoNEMANN, a subject of the King of Prussia, residing at Minden, in the Kingdom of Prussia, Germany, have invented certain new and useful Improvements in HitiIlg-Tables, of which the following is a specification.

This invention relates to writing tables which are constructed in such a manner that the commonly fiat table can be easily changed into an American desk, that is to say into a writing desk having a great many drawers, pigeon-holes, locked or unlocked compartments and the like. The part of the writing table which contains said drawers pigeonholes and compartmentsis ordinarily below the plate of the table but it can be lifted so that it stands upon said plate by means of hand lever which actuates a system of articulated levers.

The improved writing table is particularly useful as a double desk.

In the accompanying drawings the improved writing table is shown by way of ex ample with lifted chest of drawers.

Figure 1 is a front elevation of'the improved writing table; Fig. 2 represents the writing table seen from behind, the back wall being removed.

The writing table has a chest of drawers d which is arranged in such a manner that it can be lowered into a hollow space so that its top plate is flush with the plate of the writing table. A hand lever b is mounted under the drawer a of the writing table on the front end of a horizontal axle o, the rear end of which axle carries a crank arm 6 to one end of which a push-rod f is pivotally mounted. The pivot bolt which connects the push rod with the crank arm 6 is guided in a vertical slot m of an iron plate a. On said pivot pin two levers g, g are pivotally mounted which have each a pin 0 projecting from the rear surface and engaging with inclined guide slots of an iron bar 10 fixed upon said plate n. The outer ends of the levers g, g have horizontal arms h, h which carry the chest of drawers (Z. The free end of the hand lever 22 is slotted so that it can be made to engage with a corresponding locking pin.

In order to lift'the chest of drawers (Z Specification of Letters Patent.

Patented Sept. 14, 1915.

Serial No. 650,995.

above the plate of the writing table, the hand lever 7) is turned from the position shown in Fig. 2 in dotted lines into the position shown in Fig. 1, whereby the pivot bolt is lifted in the vertical guide slot on of the iron plate a and theouter ends of the levers g, g with the horizontal arms h, 72 go up and lift the chest of drawers (Z which is maintained in this lifted position without the aid of any locking means, as the push rod f is at the dead point position and a certain force is required to move the lever system in opposite direction.

I claim 1. In combination with a writing desk, a movable chest of drawers normally sunk below the top of the desk, two one-armed levers crossing each other and carrying upon their free ends the said chest of drawers, movable pivots for said levers, a pivot common to said two levers, a crank handle pivotally mounted at the writing desk, :1 pusher rod connected with said crank handle and with said pivot common to said two levers respectively, and ,a vertical guide for said pivot, substantially as described and shown and for the purpose set forth.

2. In combination with a writing desk, a movable chest of drawers normally sunk below the top of the desk, two one-armed levers crossing each other and carrying upon their free ends the said chest of drawers. movable pivots for said levers, a pivot common to said two levers, a crank handle pivotally mounted at the writing desk, a pusher rod connected with said crank handle and with said pivot common to said two levers respectively, and a vertical guide for said pivot having two lateral slots in which the movable pivots of the levers are guided. substantially as described and shown and for the purpose set forth.

3. In combination with a writing desk, a movable chest of drawers normally sunk below the top of the desk, two one-armed levers crossing each other and carrying upon their free ends the said chest of drawers, movable pivots for said levers, a pivot common to said two levers, a crank handle pivotally mounted at the writing desk and that it looks the chest of drawers in the lifted position when it has been brought to its dead point position, a pusher rod connected with In witness whereof I have hereunto set said crank handle and with said pivot commy hand in the presence of twowitnesses. mon to said two levers respectively, and a I v "WILHELM KfiNgMANN vertical guide for said pivot, substantially as Wi e I V 5 described and shown and for the purpose set 'FRIEDRICH TEMANN,

forth. V

WILBZELM. STRUP.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents 7 Washington, D. G. r 

